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Message-ID: <CAHz4bYtYMZQSdw4XKSB06fT2MzZHu=AgdXGrZ73XVXi1sMwyyw@mail.gmail.com>
Date: Wed, 14 Jan 2026 11:10:26 +0530
From: Swati Agarwal <swati.agarwal@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Icenowy Zheng <uwu@...nowy.me>,
Matthias Kaehlcke <mka@...omium.org>,
J . Neuschäfer <j.ne@...teo.net>,
Jens Glathe <jens.glathe@...schoolsolutions.biz>,
Mike Looijmans <mike.looijmans@...ic.nl>,
Catalin Popescu <catalin.popescu@...ca-geosystems.com>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>,
Pin-yen Lin <treapking@...omium.org>, linux-usb@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v3 4/4] arm64: dts: qcom: lemans-evk: Enable secondary USB
controller in host mode
On Tue, Jan 13, 2026 at 4:59 PM Dmitry Baryshkov
<dmitry.baryshkov@....qualcomm.com> wrote:
>
> On Tue, Jan 13, 2026 at 01:32:41PM +0530, Swati Agarwal wrote:
> > On Sat, Dec 20, 2025 at 9:47 PM Dmitry Baryshkov
> > <dmitry.baryshkov@....qualcomm.com> wrote:
> > >
> > > On Sat, Dec 20, 2025 at 12:05:37PM +0530, Swati Agarwal wrote:
> > > > Enable secondary USB controller in host mode on lemans EVK Platform.
> > > >
> > > > For secondary USB Typec port, there is a genesys USB HUB GL3590 having 4
> > > > ports sitting in between SOC and HD3SS3220 Type-C port controller and SS
> > > > lines run from the SoC through the hub to the Port controller. Mark the
> > > > second USB controller as host only capable.
> > > >
> > > > Add HD3SS3220 Type-C port controller along with Type-c connector for
> > > > controlling vbus supply.
> > > >
> > > > Signed-off-by: Swati Agarwal <swati.agarwal@....qualcomm.com>
> > > > ---
> > > > arch/arm64/boot/dts/qcom/lemans-evk.dts | 158 ++++++++++++++++++++++++
> > > > 1 file changed, 158 insertions(+)
> > > >
> > > > diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
> > > > index 70d85b6ba772..d72639479d75 100644
> > > > --- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
> > > > +++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
> > > > @@ -67,6 +67,47 @@ usb0_con_ss_ep: endpoint {
> > > > };
> > > > };
> > > >
> > > > + connector-1 {
> > > > + compatible = "usb-c-connector";
> > > > + label = "USB1-Type-C";
> > > > + data-role = "host";
> > > > + power-role = "dual";
> > > > + try-power-role = "source";
> > > > +
> > > > + vbus-supply = <&vbus_supply_regulator_1>;
> > > > +
> > > > + ports {
> > > > + #address-cells = <1>;
> > > > + #size-cells = <0>;
> > > > +
> > > > + port@0 {
> > > > + reg = <0>;
> > > > +
> > > > + usb1_con_ss_ep: endpoint {
> > > > + remote-endpoint = <&hd3ss3220_1_in_ep>;
> > > > + };
> > > > + };
> > > > +
> > > > + port@1 {
> > > > + reg = <1>;
> > > > +
> > > > + usb1_hs_in: endpoint {
> > > > + remote-endpoint = <&usb_hub_2_1>;
> > > > + };
> > > > +
> > > > + };
> > > > +
> > > > + port@2 {
> > > > + reg = <2>;
> > > > +
> > > > + usb1_ss_in: endpoint {
> > > > + remote-endpoint = <&usb_hub_3_1>;
> > > > + };
> > > > +
> > > > + };
> > > > + };
> > > > + };
> > > > +
> > > > edp0-connector {
> > > > compatible = "dp-connector";
> > > > label = "EDP0";
> > > > @@ -140,6 +181,16 @@ vbus_supply_regulator_0: regulator-vbus-supply-0 {
> > > > enable-active-high;
> > > > };
> > > >
> > > > + vbus_supply_regulator_1: regulator-vbus-supply-1 {
> > > > + compatible = "regulator-fixed";
> > > > + regulator-name = "vbus_supply_1";
> > > > + gpio = <&expander1 3 GPIO_ACTIVE_HIGH>;
> > > > + regulator-min-microvolt = <5000000>;
> > > > + regulator-max-microvolt = <5000000>;
> > > > + regulator-boot-on;
> > > > + enable-active-high;
> > > > + };
> > > > +
> > > > vmmc_sdc: regulator-vmmc-sdc {
> > > > compatible = "regulator-fixed";
> > > >
> > > > @@ -527,6 +578,33 @@ hd3ss3220_0_out_ep: endpoint {
> > > > };
> > > > };
> > > > };
> > > > +
> > > > + usb-typec@47 {
> > > > + compatible = "ti,hd3ss3220";
> > > > + reg = <0x47>;
> > > > +
> > > > + interrupts-extended = <&pmm8654au_2_gpios 6 IRQ_TYPE_EDGE_FALLING>;
> > > > +
> > > > + id-gpios = <&tlmm 51 GPIO_ACTIVE_HIGH>;
> > > > +
> > > > + pinctrl-0 = <&usb1_id>, <&usb1_intr>;
> > > > + pinctrl-names = "default";
> > > > +
> > > > + ports {
> > > > + #address-cells = <1>;
> > > > + #size-cells = <0>;
> > > > +
> > > > + port@0 {
> > > > + reg = <0>;
> > > > +
> > > > + hd3ss3220_1_in_ep: endpoint {
> > > > + remote-endpoint = <&usb1_con_ss_ep>;
> > > > + };
> > > > + };
> > > > +
> > > > + };
> > > > + };
> > > > +
> > > > };
> > > >
> > > > &i2c18 {
> > > > @@ -690,6 +768,14 @@ usb0_intr_state: usb0-intr-state {
> > > > bias-pull-up;
> > > > power-source = <0>;
> > > > };
> > > > +
> > > > + usb1_intr: usb1-intr-state {
> > > > + pins = "gpio6";
> > > > + function = "normal";
> > > > + input-enable;
> > > > + bias-pull-up;
> > > > + power-source = <0>;
> > > > + };
> > > > };
> > > >
> > > > &qup_i2c19_default {
> > > > @@ -849,6 +935,12 @@ usb_id: usb-id-state {
> > > > function = "gpio";
> > > > bias-pull-up;
> > > > };
> > > > +
> > > > + usb1_id: usb1-id-state {
> > > > + pins = "gpio51";
> > > > + function = "gpio";
> > > > + bias-pull-up;
> > > > + };
> > > > };
> > > >
> > > > &uart10 {
> > > > @@ -903,6 +995,72 @@ &usb_0_qmpphy {
> > > > status = "okay";
> > > > };
> > > >
> > > > +&usb_1 {
> > > > + dr_mode = "host";
> > > > +
> > > > + #address-cells = <1>;
> > > > + #size-cells = <0>;
> > > > +
> > > > + status = "okay";
> > > > +
> > > > + usb_hub_2_x: hub@1 {
> > > > + compatible = "usb5e3,610";
> > > > + reg = <1>;
> > > > + peer-hub = <&usb_hub_3_x>;
> > > > + #address-cells = <1>;
> > > > + #size-cells = <0>;
> > > > +
> > > > + ports {
> > > > + #address-cells = <1>;
> > > > + #size-cells = <0>;
> > > > +
> > > > + port@1 {
> > > > + reg = <1>;
> > > > +
> > > > + usb_hub_2_1: endpoint {
> > > > + remote-endpoint = <&usb1_hs_in>;
> > > > + };
> > >
> > > Are all other ports disconnected? If so, why do we need a hub?
> > Hi Dmitry,
> > I didn't understand your query, can you give more context to it?
>
> You have described one port of the hub. How are other ports routed? Are
> they connected to outer ports? To some other devices? Unconnected?
Hi Dmitry,
I would like to put it this way, USB HUB has 4 ports but only one port
of the hub is used between SOC and Type-C controller.
Remaining 3 ports are used by other devices.
Regards,
Swati
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